red
3/7÷5/6+4/7x6/5=3/7x 6/5+4/7x6/5=(3/7+4/7)x6/5=1x6/5=6/5
3/7÷5/6+4/7×6/5=3/7×6/5+4/7×6/5=6/5×(3/7+4/7)=6/5
3/7÷5/6+4/7×6/5=3/7×6/5+4/7×6/5=(3/7+4/7)×6/5=1×6/5=6/5